Vizio L32 HDTV10A - Wont turn on

[lvvolvo]

Re: Vizio L32 HDTV10A - Wont turn on

Back again. U26 is a linear 4.38 volt regulator. Mouser has this part in stock and I'll be ordering it since I have the same identical problem. Mine is not shorted but its not measuring correctly on my DMM. Hope this helps others.

[budm]

Re: Vizio L32 HDTV10A - Wont turn on

ASM809 is 3 Pin Microcontroller Power Supply Supervisor, it is not regulator:
RESET THRESHOLD
Suffix Voltage
L 4.63
M 4.38
J 4.00
T 3.08
S 2.93
R 2.63

Features:
• Monitor 5V, 3.3V and 3V supplies
• 140ms min. reset pulse width
• Active-low reset valid with 1.1V supply (ASM809)
• Small 3-pin SOT-23 package
• No external components
• Specified over full temperature range - -40°C to 105°C

You should show the picture of U26.

[ivtec]

Re: Vizio L32 HDTV10A - Wont turn on

ASM809 is 3 Pin Microcontroller Power Supply Supervisor, it is not regulator:
RESET THRESHOLD
Suffix Voltage
L 4.63
M 4.38
J 4.00
T 3.08
S 2.93
R 2.63

Features:
• Monitor 5V, 3.3V and 3V supplies
• 140ms min. reset pulse width
• Active-low reset valid with 1.1V supply (ASM809)
• Small 3-pin SOT-23 package
• No external components
• Specified over full temperature range - -40°C to 105°C

You should show the picture of U26.

budm don't tire yourself trying to help these guys ,they think they know it all.they been ignoring you that's not nice.

[lvvolvo]

Re: Vizio L32 HDTV10A - Wont turn on

As a follow up for the Vizio L32 flat screen, wont power up. U26 is a 4.38 voltage regulator. Even though this set was made in 2005 I'm sure these sets are still in circulation so its good information for us Certified Electronics Technicians to know about it.

[budm]

Re: Vizio L32 HDTV10A - Wont turn on

As a follow up for the Vizio L32 flat screen, wont power up. U26 is a 4.38 voltage regulator. Even though this set was made in 2005 I'm sure these sets are still in circulation so its good information for us Certified Electronics Technicians to know about it.

ASM809 is NOT Voltage regulator. Please look at the spec sheet and description and how it is being used in the circuit.
It is Microcontroller Power Supply Supervisor with RESET THRESHOLD OF 4.38V (for 'M').